diff --git a/docs/CustomizingAzdParameters.md b/docs/CustomizingAzdParameters.md
index 579eee49..7728f4dc 100644
--- a/docs/CustomizingAzdParameters.md
+++ b/docs/CustomizingAzdParameters.md
@@ -34,4 +34,9 @@ azd env set AZURE_ENV_MODEL_CAPACITY '30'
 Change if the deployment should use a local build of the containers
 ```shell
 azd env set USE_LOCAL_BUILD 'false'
+```
+
+Set the Log Analytics Workspace Id if you need to reuse the existing workspace which is already existing
+```shell
+azd env set AZURE_ENV_LOG_ANALYTICS_WORKSPACE_ID '<Existing Log Analytics Workspace Id>'
 ```
\ No newline at end of file
diff --git a/docs/DeploymentGuide.md b/docs/DeploymentGuide.md
index 30d3d66e..9e6334e2 100644
--- a/docs/DeploymentGuide.md
+++ b/docs/DeploymentGuide.md
@@ -119,6 +119,7 @@ When you start the deployment, most parameters will have **default values**, but
 | **Deployment Type** | Select from a drop-down list. | GlobalStandard |
 | **GPT Model** | Choose from **gpt-4o**. | gpt-4o |
 | **GPT Model Deployment Capacity** | Configure capacity for **GPT models**. | 30k |
+| **Existing Log analytics workspace** | To reuse the existing Log analytics workspace Id. |  |
 
 </details>
 
diff --git a/infra/container_app/deploy_container_app_env.bicep b/infra/container_app/deploy_container_app_env.bicep
index e9102a3d..858f1f56 100644
--- a/infra/container_app/deploy_container_app_env.bicep
+++ b/infra/container_app/deploy_container_app_env.bicep
@@ -3,9 +3,11 @@ param containerEnvName string
 param location string
 
 param logAnalyticsWorkspaceName string
+param logAnalyticsWorkspaceResourceGroup string
 
 resource logAnalyticsWorkspace 'Microsoft.OperationalInsights/workspaces@2023-09-01' existing = {
   name: logAnalyticsWorkspaceName
+  scope: resourceGroup(logAnalyticsWorkspaceResourceGroup)
 }
 
 resource containerRegistryReader 'Microsoft.ManagedIdentity/userAssignedIdentities@2023-01-31' = {
diff --git a/infra/deploy_app_insights.bicep b/infra/deploy_app_insights.bicep
index 8b95ff94..0a1c85b7 100644
--- a/infra/deploy_app_insights.bicep
+++ b/infra/deploy_app_insights.bicep
@@ -2,8 +2,18 @@ targetScope = 'resourceGroup'
 
 param applicationInsightsName string
 param logAnalyticsWorkspaceName string
+param existingLogAnalyticsWorkspaceId string = ''
 
-resource logAnalyticsWorkspace 'Microsoft.OperationalInsights/workspaces@2023-09-01' = {
+var useExisting = !empty(existingLogAnalyticsWorkspaceId)
+var existingLawResourceGroup = useExisting ? split(existingLogAnalyticsWorkspaceId, '/')[4] : ''
+var existingLawName = useExisting ? split(existingLogAnalyticsWorkspaceId, '/')[8] : ''
+
+resource existingLogAnalyticsWorkspace 'Microsoft.OperationalInsights/workspaces@2020-08-01' existing = if (useExisting) {
+  name: existingLawName
+  scope: resourceGroup(existingLawResourceGroup)
+}
+
+resource logAnalyticsWorkspace 'Microsoft.OperationalInsights/workspaces@2023-09-01' = if (!useExisting) {
   name: logAnalyticsWorkspaceName
   location: resourceGroup().location
   properties: any({
@@ -32,9 +42,10 @@ resource applicationInsights 'Microsoft.Insights/components@2020-02-02' = {
     publicNetworkAccessForIngestion: 'Enabled'
     publicNetworkAccessForQuery: 'Disabled'
     Request_Source: 'rest'
-    WorkspaceResourceId: logAnalyticsWorkspace.id
+    WorkspaceResourceId: useExisting ? existingLogAnalyticsWorkspace.id : logAnalyticsWorkspace.id
   }
 }
 
 output id string = applicationInsights.id
-output logAnalyticsWorkspaceName string = logAnalyticsWorkspace.name
+output logAnalyticsWorkspaceName string = useExisting ? existingLogAnalyticsWorkspace.name : logAnalyticsWorkspace.name
+output logAnalyticsWorkspaceResourceGroup string = useExisting ? existingLawResourceGroup : resourceGroup().name
diff --git a/infra/main.bicep b/infra/main.bicep
index 8998f538..02d442d4 100644
--- a/infra/main.bicep
+++ b/infra/main.bicep
@@ -75,6 +75,9 @@ param maxReplicaContainerWeb int = 1
 @description('Set this flag to true only if you are deplpoying from Local')
 param useLocalBuild string = 'false'
 
+@description('Optional: Existing Log Analytics Workspace Resource ID')
+param existingLogAnalyticsWorkspaceId string = ''
+
 var containerImageEndPoint = 'cpscontainerreg.azurecr.io'
 var resourceGroupLocation = resourceGroup().location
 
@@ -110,6 +113,7 @@ module kvault 'deploy_keyvault.bicep' = {
 module applicationInsights 'deploy_app_insights.bicep' = {
   name: 'deploy_app_insights'
   params: {
+    existingLogAnalyticsWorkspaceId: existingLogAnalyticsWorkspaceId
     applicationInsightsName: '${abbrs.managementGovernance.applicationInsights}${solutionPrefix}'
     logAnalyticsWorkspaceName: '${abbrs.managementGovernance.logAnalyticsWorkspace}${solutionPrefix}'
   }
@@ -159,6 +163,7 @@ module containerAppEnv './container_app/deploy_container_app_env.bicep' = {
     containerEnvName: '${abbrs.containers.containerAppsEnvironment}${solutionPrefix}'
     location: secondaryLocation
     logAnalyticsWorkspaceName: applicationInsights.outputs.logAnalyticsWorkspaceName
+    logAnalyticsWorkspaceResourceGroup: applicationInsights.outputs.logAnalyticsWorkspaceResourceGroup
   }
 }
 
diff --git a/infra/main.bicepparam b/infra/main.bicepparam
index 2c955f4c..c7549d8b 100644
--- a/infra/main.bicepparam
+++ b/infra/main.bicepparam
@@ -6,3 +6,4 @@ param deploymentType = readEnvironmentVariable('AZURE_ENV_MODEL_DEPLOYMENT_TYPE'
 param gptModelName = readEnvironmentVariable('AZURE_ENV_MODEL_NAME', 'gpt-4o')
 param gptDeploymentCapacity = int(readEnvironmentVariable('AZURE_ENV_MODEL_CAPACITY', '30'))
 param useLocalBuild = readEnvironmentVariable('USE_LOCAL_BUILD', 'false')
+param existingLogAnalyticsWorkspaceId = readEnvironmentVariable('AZURE_ENV_LOG_ANALYTICS_WORKSPACE_ID', '')